I sort of quite like the limitations of archiveorg, it also has stuff I reckon is not on stremio (although I haven't used it) I'm thinking more art shorts and rarities.

EffedUp movies would also be a good one to integrate, they have some of these features.

Adding cytube functionality: The ability to open a room add movies to a playlist, have vote skip (optional) and sync watch parties would be amazing.

But really because archiveorg doesn't really have a suitable UI, but a really decent selection. I think people would actually use it